<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<img src="a.png" alt="图片丢失就显示我！！！" width="33%" title="鼠标聚焦就显示我！！！"><!--同级-->
<img src="../b.png" alt="" width="33%"><!--上级-->
<img src="ccc/c.png" alt="" width="33%"><!--同级的下级-->

<img src="http://localhost:63342/untitled1/Day01/ccc/c.png" alt="图片盗链" width="100%">

</body>
</html>